CCSK Module 1 Unit 4 Answers – Cloud Service Models Knowledge Check Quiz

CCSK Module 1 Unit 4 Answers – Cloud Service Models Knowledge Check Quiz Full 100% 2023 2024

This is CCSK Module 1 Unit 4 Answers – Cloud Service Models Knowledge Check Quiz. Our expert team has verified questions and answers with clear explanations to get a full score of 100%. You can review all these questions before taking the exam.

1. Which service model would a cloud database be considered?

   • Platform as Service
   • Software as Service
   • Storage as a Service
   • Infrastructure as a Service

   • Answers Explanation & Hints: A cloud database would typically fall under the category of “Database as a Service” (DBaaS), which is a subcategory of the Platform as a Service (PaaS) service model. Database as a Service (DBaaS) provides users with access to a managed and scalable database system hosted in the cloud. It abstracts the complexities of database administration, such as installation, configuration, maintenance, and backups, allowing users to focus on using the database for their applications without worrying about the underlying infrastructure. While Software as a Service (SaaS) and Storage as a Service (STaaS) are other service models in cloud computing, they do not specifically capture the nature of a cloud database. SaaS typically refers to applications or software delivered over the internet, while STaaS refers to cloud-based storage solutions. Infrastructure as a Service (IaaS) provides virtualized computing resources but does not specifically focus on database services.

2. Software as a Service is always built on top of Platform as a Service which is always built on Infrastructure as Service.

   • True
   • False

   • Answers Explanation & Hints: The statement “Software as a Service is always built on top of Platform as a Service, which is always built on Infrastructure as a Service” is false. Let me clarify the correct relationship between these service models: While it is common for Software as a Service (SaaS) to utilize Platform as a Service (PaaS) and PaaS to rely on Infrastructure as a Service (IaaS), it is not an absolute requirement. SaaS refers to delivering software applications over the internet, where users access and use the applications without needing to manage the underlying infrastructure or platform. SaaS providers can build their applications directly on top of IaaS or PaaS or utilize a combination of both, depending on their specific requirements and preferences. Some SaaS providers may choose to build their applications on top of PaaS to take advantage of the preconfigured platform services and tools it offers, while others might build directly on top of IaaS for more flexibility and control. Similarly, PaaS provides a platform for developing, deploying, and managing applications. While it often relies on IaaS for infrastructure resources, it is possible to have a PaaS offering that includes its own infrastructure components or is built on a combination of IaaS and other technologies. Therefore, it is not always the case that SaaS is built on top of PaaS, and PaaS is built on top of IaaS. The specific architecture and layering of these service models can vary depending on the provider and their design choices.

3.  Which of the following is most likely to be considered IaaS:

   • A virtual machine
   • A container registry
   • A cloud message queue
   • The cloud’s management console

   • Answers Explanation & Hints: Among the options provided, a virtual machine is most likely to be considered Infrastructure as a Service (IaaS). IaaS refers to the delivery of virtualized computing resources over the internet. It provides users with the fundamental infrastructure components, such as virtual machines (VMs), storage, and networking, as a service. Users have control over the operating systems, applications, and configurations running on the virtualized infrastructure. A virtual machine (VM) is a complete software emulation of a physical computer that runs its own operating system and applications. In the context of cloud computing, users can provision virtual machines on-demand from a cloud provider, enabling them to have flexibility and control over the infrastructure without having to manage the underlying physical hardware. This aligns with the concept of IaaS. On the other hand, a container registry is a service that allows users to store and manage container images. It is more closely associated with the realm of containerization and application deployment, which falls under the Platform as a Service (PaaS) or even the Software as a Service (SaaS) layer, depending on the specific implementation. Similarly, a cloud message queue is typically a service provided as part of a larger cloud platform or messaging system. It is often utilized for asynchronous communication and event-driven architectures, which are more characteristic of PaaS or SaaS offerings. The cloud’s management console, also known as a cloud management portal, is the user interface or web-based console provided by cloud service providers. It is a tool that allows users to manage and monitor their cloud resources across various service models, including IaaS, PaaS, and SaaS. However, the management console itself is not considered IaaS but rather a means to interact with and manage the underlying cloud services. In summary, among the options provided, a virtual machine is most likely to be considered Infrastructure as a Service (IaaS).

4. In IaaS, individual virtual machines use which kind of storage?

   • The local hard drives on the servers
   • VSTOR-based hardware
   • A database platform
   • Virtual volumes from a storage pool

   • Answers Explanation & Hints: In Infrastructure as a Service (IaaS), individual virtual machines typically use virtual volumes from a storage pool. IaaS provides users with virtualized computing resources, including virtual machines (VMs), storage, and networking, as a service. When it comes to storage for individual VMs in an IaaS environment, the storage is often provisioned from a shared storage pool. Virtual volumes from a storage pool refer to virtualized storage resources that are allocated to individual VMs from a pool of storage resources. These virtual volumes can be dynamically provisioned and managed based on the needs of the VMs. This approach allows for flexibility and scalability in allocating and managing storage resources for VMs in an IaaS environment. On the other hand, the local hard drives on the physical servers hosting the VMs are typically not directly exposed or used as storage for individual VMs in an IaaS setup. They are usually reserved for the hypervisor or host operating system, which manages the virtualization layer and provides the necessary abstraction for the VMs. VSTOR-based hardware and a database platform are not specific storage solutions associated with individual VMs in an IaaS environment. VSTOR is a type of virtual storage technology, and a database platform typically provides higher-level database services rather than storage for individual VMs. To summarize, in IaaS, individual virtual machines generally utilize virtual volumes from a storage pool for their storage needs, rather than relying on local hard drives on the servers, VSTOR-based hardware, or a database platform.

5. Platform as a Service abstracts application platforms and platform components from underlying resources, and can be built on top of IaaS.

   • True
   • False

   • Answers Explanation & Hints: True. Platform as a Service (PaaS) abstracts application platforms and platform components from underlying resources, and it can be built on top of Infrastructure as a Service (IaaS). In the cloud computing stack, IaaS provides virtualized computing resources such as virtual machines, storage, and networking. PaaS, on the other hand, offers a higher level of abstraction by providing a platform with preconfigured development and deployment tools, runtime environments, and other services needed for application development and deployment. PaaS is designed to simplify the process of building, testing, and deploying applications. It abstracts the complexities of managing the underlying infrastructure, allowing developers to focus on application development rather than worrying about server configurations, operating system updates, or network setups. PaaS can be built on top of IaaS, leveraging the infrastructure resources provided by the underlying IaaS layer. By building on top of IaaS, PaaS providers can take advantage of the scalability, flexibility, and resource management capabilities offered by IaaS. This layering allows PaaS users to benefit from the higher-level platform services while utilizing the infrastructure resources provided by the IaaS layer. Therefore, the statement “Platform as a Service abstracts application platforms and platform components from underlying resources, and can be built on top of IaaS” is true.

6. Which of the following is not required to be considered SaaS?

   • The essential characteristics
   • Underlying physical hardware
   • A complete application
   • Customer management of the underlying resources

   • Answers Explanation & Hints: Customer management of the underlying resources is not required to be considered Software as a Service (SaaS). SaaS is a cloud computing service model where software applications are provided over the internet as a service. In the SaaS model, the software application is hosted and managed by a third-party provider, and users access the application remotely through a web browser or thin client. The essential characteristics of cloud computing, which include on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service, are relevant to all cloud service models, including SaaS. These characteristics define the fundamental capabilities and benefits of cloud computing. The underlying physical hardware is managed by the SaaS provider and is not directly controlled or managed by the customers using the service. Customers are typically not involved in managing the infrastructure, servers, or hardware components that support the SaaS application. Instead, they focus on using and configuring the software application itself. A complete application is a crucial aspect of SaaS. The SaaS provider is responsible for delivering a fully functional and operational software application to the customers. Users can access and use the application without needing to install or maintain it on their own devices. In summary, customer management of the underlying resources is not required for a service to be considered SaaS. The SaaS model allows customers to access and use a complete software application hosted and managed by the provider, without the need for managing the underlying hardware or infrastructure.

7.  Drag the labels to indicate which of the SaaS components are built on IaaS.

   

   • Answers Explanation & Hints: Both the application server auto scale group and web server auto scale group are typically built on Infrastructure as a Service (IaaS). These components rely on virtual machines and the underlying infrastructure resources provided by the IaaS layer to dynamically provision and manage the respective server instances based on demand. So, the correct mapping would be: Application server auto scale group – Built on IaaS Web server auto scale group – Built on IaaS